package com.example.p5;

public class Main3 {
    public static void main(String[] args) {
        StringBuffer searchstr=new StringBuffer("hello how are you");
        int length=searchstr.length();
        int count=0;
        for(int i=0;i<length;i++){
            if(searchstr.charAt(i)!='h'){
                continue;}
                count++;
                searchstr.setCharAt(i,'h');

            System.out.println("发现"+count+"个h字符");
            System.out.println(searchstr);
        }
    }
}
